JP7347088B2 - Image forming device - Google Patents

Description

The present invention relates to an image forming apparatus.

The paper transport path structure includes a main unit and a drawer unit that can be pulled out from the main unit, and the transport path member on the main unit side and the transport path member on the drawer unit side that constitute the paper transport path can be separated. The image forming apparatus forms an image on a sheet of paper conveyed through a paper conveyance path, and the sheet conveyance path structure includes a conveyance path on the side of the main unit that regulates the movement of one side of the sheet in a predetermined direction. and a conveyance path on the side of a drawer unit that is slidably combined with the conveyance path member facing the conveyance path member, and has a predetermined distance between the conveyance path member and the movement of the paper on the other side. member, and a cleaning mechanism provided on the sliding start point side of the conveyance path member of the drawer unit, and the cleaning mechanism moves from the end side of the conveyance path member of the drawer unit to the main body device opposite to the end side. includes a cleaning member having a predetermined length or longer that reaches the end of the transport path member, and when the drawer unit is pulled out or installed, the tip of the cleaning member reaches the end of the transport path member on the main device side. An image forming apparatus that is slid while being touched is known (Patent Document 1).

A paper tray that stores paper on which images are to be formed, a device main body that stores the paper tray so that it can be taken in and out, and has a jam removal opening formed on the pull-out side of the paper tray and below the tray storage space, and the device. A paper reversing section is formed inside the main body and pulls the paper downward to reverse the paper, and a paper reversing section is formed approximately horizontally at the lowest part of the device main body in communication with a jam removal port. There is a paper pull-in storage section that stores the paper that is pulled downward at the paper tray, and a paper pull-in storage section that moves the inside of the paper pull-in storage section to the paper tray pull-out side in conjunction with the paper tray pull-out operation, and a paper pull-in storage section that stores the paper that is pulled downward in the paper tray drawer. An image forming apparatus is also known that includes an extrusion section that pushes out the jammed paper from the jam removal port while coming into contact with the jammed paper (Patent Document 2).

Japanese Patent Application Publication No. 2011-241012 Japanese Patent Application Publication No. 2004-35129

The present invention can reliably remove remaining paper on the conveyance path and also clean the conveyance path.

In order to solve the problem, an image forming apparatus according to claim 1 includes:
A drawer unit that can be pulled out from the main device,
a paper reversing unit formed in the apparatus main body and pulling the paper below the drawer unit in order to reverse the paper;
a paper guide plate provided in the paper reversing section opposite to the drawer unit, and having a recess formed in a direction extending in the drawer direction of the drawer unit and intersecting with the conveying direction of the paper;
a protruding body provided on the drawer start point side in the drawer direction of the lower surface facing the paper guide plate of the drawer unit, further back than the paper conveyance area, and protrudes toward the recess;
It is characterized by

The invention according to claim 2 is the image forming apparatus according to claim 1, which comprises:
The protrusion moves along the recess of the guide plate toward the drawer side of the drawer unit in conjunction with the drawer operation of the drawer unit, and contacts the edge of the paper present in the paper reversing section. pushing out the paper in a direction in which the main unit is pulled out;
It is characterized by

The invention according to claim 3 is the image forming apparatus according to claim 1 or 2,
The drawer unit further includes a second protruding body that is provided on a drawer start point side in the drawer direction on a lower surface facing the guide plate of the drawer unit and is provided on the back side of the paper conveyance area and protrudes toward the paper guide plate,
cleaning the paper guide plate while the second protrusion moves toward the drawer side of the drawer unit while contacting the paper guide plate in conjunction with the drawer operation of the drawer unit;
It is characterized by

The invention according to claim 4 is the image forming apparatus according to claim 3, which comprises:
the protruding body and the second protruding body are foamed elastic bodies;
It is characterized by

The invention according to claim 5 is the image forming apparatus according to claim 3,
the protruding body and the second protruding body are Mylar films;
It is characterized by

The invention according to claim 6 is the image forming apparatus according to claim 3, which comprises:
the protruding body and the second protruding body are pile brushes;
It is characterized by

According to the first aspect of the invention, when a paper jam occurs in the paper reversing section, the remaining paper in the paper reversing section can be reliably removed.

According to the second aspect of the present invention, the remaining paper in the paper reversing section can be pushed out in the direction in which the main unit is pulled out by the pulling operation of the drawer unit.

According to the invention described in claim 3, the paper guide plate of the paper reversing section can be cleaned by pulling out the drawer unit, thereby preventing dirt from adhering to the user who is removing the remaining paper. .

According to the fourth aspect of the present invention, it is possible to reliably remove the remaining paper in the paper reversing section, and to prevent the user who removes the remaining paper from getting dirty.

According to the invention set forth in claim 5, it is possible to reliably remove the remaining paper in the paper reversing section, and it is also possible to prevent dirt from adhering to the user who removes the remaining paper.

According to the invention set forth in claim 6, it is possible to reliably remove the remaining paper in the paper reversing section, and to prevent dirt from adhering to the user who removes the remaining paper.

FIG. 1 is a schematic cross-sectional view showing an example of a schematic configuration of an image forming apparatus. (a) is a schematic front sectional view showing a paper reversing section and a paper tray, and (b) is a schematic side sectional view showing a paper reversing section and a paper tray. FIG. 3 is a perspective view showing the inside of the paper reversing section with a paper tray not shown. FIG. 3 is a perspective view showing a paper guide plate and a paper tray, looking toward the rear side of the apparatus. FIG. 3 is a schematic side cross-sectional view illustrating removal of remaining paper in a paper reversing section. (a) is a schematic front sectional view showing a paper reversing unit and a paper tray according to a second embodiment, and (b) and (c) are schematic side sectional views showing a paper reversing unit and a paper tray. FIG. 3 is a perspective view showing a paper guide plate and a paper tray, looking toward the rear side of the apparatus. 7 is a schematic side cross-sectional view illustrating removal of remaining paper and cleaning of a paper guide plate in a paper reversing unit according to the second embodiment. FIG. 7 is a perspective view showing a paper guide plate and a paper tray of a paper reversing unit according to Modification 1, viewed from the rear side of the apparatus. FIG. 7 is a schematic side cross-sectional view illustrating removal of remaining paper and cleaning of a paper guide plate in a paper reversing section according to Modification Example 1; FIG. 12 is a perspective view showing a paper guide plate and a paper tray of a paper reversing unit according to Modification 2, viewed from the rear side of the apparatus. FIG. 7 is a schematic side cross-sectional view illustrating removal of remaining paper and cleaning of a paper guide plate in a paper reversing section according to Modification Example 2; FIG. 3 is a schematic cross-sectional view illustrating removal of remaining paper in an image forming apparatus according to a comparative example.

Next, the present invention will be described in more detail by way of embodiments and specific examples with reference to the drawings, but the present invention is not limited to these embodiments and specific examples.
In addition, in the explanations using the drawings below, it should be noted that the drawings are schematic and the proportions of each dimension are different from the actual ones. Illustrations of parts other than members are omitted as appropriate.
In order to facilitate understanding of the following explanation, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, and the up-down direction is the Z-axis direction.

“First embodiment”
(1) Overall Configuration and Operation of Image Forming Apparatus (1.1) Overall Configuration of Image Forming Apparatus FIG. 1 is a schematic cross-sectional view showing an example of a schematic configuration of an image forming apparatus 1 according to the present embodiment.
The image forming apparatus 1 includes an image forming section 10, a paper feeding device 20 attached to the lower part of the image forming section 10, and a paper discharging device provided at one end of the image forming section 10 from which printed paper P is discharged. 30.

The image forming section 10 includes a system control device (not shown), an exposure device 12, a photoreceptor unit 13, a developing device 14, a transfer device 15, a paper transport device 16a, a fixing device 17, and an image processing section 40. The image information received from the paper feeder 20 is formed as a toner image on the paper P fed from the paper feeder 20.

A paper feeding device 20 having paper trays 21 and 22, which is an example of a drawer unit, is provided at the bottom of the image forming section 10, and supplies paper to the image forming section 10. That is, it is provided with a plurality of paper trays 21 and 22 that accommodate paper P as a recording material of different types (for example, material, thickness, paper size, paper grain), and which one of these plurality of paper trays 21 and 22 is stored. The paper P fed from one of the paper sheets is supplied to the image forming section 10. The paper trays 21 and 22 can be pulled out toward the operator (-Y direction), and paper P is replenished by pulling them out toward the operator.

The paper discharge section 30 discharges the paper P on which the image is outputted by the image forming section 10 and the image is fixed by the fixing device 17. For this purpose, the paper discharge section 30 includes a conveyance path 31 for conveying the fixed paper P and a discharge paper storage section T1 for discharging the paper P. In addition, when outputting images on both sides of the paper P, a paper reversing unit 18 is provided which inverts the front and back of the paper P and sends the paper P to the paper transport device 16b. Note that the sheet discharge section 30 may have a function of performing post-processing such as cutting and stapling on the sheet bundle output from the image forming section 10.

(1.2) Configuration and operation of image forming unit In the image forming apparatus 1 having such a configuration, paper specified in the paper feed device 20 for each sheet to be printed in a print job is supplied in accordance with the timing of image formation. Paper P fed out from the stacking section is sent to the image forming section 10.

The photoreceptor units 13 are each provided in parallel below the exposure device 12, and include photoreceptor drums 131 as rotationally driven image holders. A charger 132, an exposure device 12, a developing device 14, a primary transfer roller 152, and a cleaning blade 134 are arranged along the rotation direction of the photoreceptor drum 131.

The developing device 14 has a developing housing 141 in which developer is accommodated. A developing roller 142 facing the photosensitive drum 131 is disposed within the developing housing 141 .
Each of the developing devices 14 has substantially the same configuration except for the developer contained in the developing housing 141, and each forms a yellow (Y), magenta (M), cyan (C), and black (K) toner image. do.

The surface of the rotating photosensitive drum 131 is charged by a charger 132, and an electrostatic latent image is formed by latent image forming light emitted from the exposure device 12. The electrostatic latent image formed on the photosensitive drum 131 is developed as a toner image by a developing roller 142.

The transfer device 15 includes an intermediate transfer belt 151 to which the toner images of each color formed on the photoreceptor drums 131 of each photoreceptor unit 13 are multiple-transferred; A primary transfer roller 152 sequentially transfers (primary transfer) onto the intermediate transfer belt 151, and a secondary transfer roller 153 transfers the toner images of each color superimposed and transferred onto the intermediate transfer belt 151 all at once (secondary transfer) onto paper P, which is a recording medium. It is configured with.

Each color toner image formed on the photoconductor drum 131 of each photoconductor unit 13 is transferred to a primary transfer section where the intermediate transfer belt 151 and each photoconductor drum 131 come into contact, and a power supply device (not shown) controlled by a system control device The primary transfer roller 152 to which a predetermined primary transfer voltage is applied sequentially performs electrostatic transfer (primary transfer) onto the intermediate transfer belt 151 to form a superimposed toner image in which toner of each color is superimposed.

As the intermediate transfer belt 151 moves, the superimposed toner image on the intermediate transfer belt 151 is conveyed to a secondary transfer portion TR where a secondary transfer roller 153 is placed in pressure contact with a backup roller 165 via the intermediate transfer belt 151. Ru.
When the superimposed toner image is conveyed to the secondary transfer section TR, the paper P is supplied from the paper feeding device 20 to the secondary transfer section TR at the same timing. A predetermined secondary transfer voltage is applied to the backup roller 165 facing the secondary transfer roller 153 via the intermediate transfer belt 151 from a power supply device (not shown) controlled by the system control device 11. Multiple toner images on the intermediate transfer belt 151 are transferred onto the paper P at once.

The residual toner on the surface of the photoreceptor drum 131 is removed by a cleaning blade 134, and the surface of the photoreceptor drum 131 is recharged by a charger 132.

The paper P onto which the toner image has been transferred in the transfer device 15 is transported to the fixing device 17 via the paper transport device 16a with the toner image unfixed. The toner image is fixed on the paper P conveyed to the fixing device 17 by heating and pressing by a pair of heating module 17a and pressure module 17b.

The paper P that has been fixed is stacked on the discharged paper storage section T1. When outputting images on both sides of the paper P, the paper P is reversed by the paper reversing section 18 and sent to the secondary transfer section TR in the image forming section 10 again. Then, after the toner image is transferred and the transferred image is fixed, the sheet is sent to the sheet discharge section 30. The paper P sent to the paper discharge section 30 is subjected to post-processing such as cutting and stapling as necessary.

(2) Paper reversing unit FIG. 2(a) is a schematic front sectional view showing the paper reversing unit 18 and paper trays 21, 22, (b) is a schematic side sectional view showing the paper reversing unit 18 and paper trays 21, 22, FIG. 3 is a perspective view showing the inside of the paper reversing unit 18 with paper trays 21 and 22 not shown, and FIG. 5 is a side cross-sectional schematic diagram illustrating the removal of the remaining paper in the paper reversing unit 18, and FIG. 13 is a cross-sectional schematic diagram illustrating the removal of the remaining paper P1 in the image forming apparatus 100 according to the comparative example.
The configuration of the paper reversing section 18 and the removal of remaining paper will be described below with reference to the drawings.

(2.1) Structure of Paper Reversing Unit As shown in FIG. 2, the paper reversing unit 18 in the image forming apparatus 1 according to the present embodiment has a storage space for the paper feeding device 20 in order to keep the size of the apparatus body as small as possible. A paper conveyance path 16c is formed substantially vertically on one side (paper discharge section 30) of the apparatus main body adjacent to the paper trays 21 and 22, and a paper transport path 16c is formed substantially horizontally at the lowest part of the apparatus main body which becomes a dead space when installing the paper trays 21 and 22. A paper pull-in storage section 181 is formed as a paper pull-in path. This makes it possible to perform automatic double-sided printing on not only regular-sized paper but also long paper by pulling the paper into the paper pull-in storage section 181 and reversing and conveying it.

On the other hand, in the image forming apparatus, when the paper P is reversed from front to back in the paper reversing unit 18, it is necessary to always hold the paper P between the reversing rolls 16d, but for some reason, especially small-sized paper P is reversed. When the paper P comes off the roll 16d, it falls from the paper transport path 16c to the paper pull-in storage section 181, becomes a jammed paper, and remains in the paper pull-in storage section 181 as a remaining paper.
If the image forming operation is continued in a state where a jam has occurred in the paper pull-in storage section 181 in this way, there is a risk that the subsequent paper P will get caught on the remaining paper P1 that remains in the paper pull-in storage section 181, causing paper jams to occur one after another. there were. Therefore, it is necessary to promptly remove the remaining paper P1 that has fallen from the paper transport path 16c and has remained in the paper pull-in storage section 181.

However, in the image forming apparatus 100 according to the comparative example shown in FIG. ), it was difficult to access the remaining paper P1 that remained in the paper pull-in storage section 181, and the user could not remove this remaining paper P1.
Therefore, whenever the paper P falls into the paper draw-in storage section 181, it is necessary to call a maintenance worker to remove the jammed paper. In addition, the maintenance worker cannot remove the remaining paper P1 unless the paper tray 22 is completely removed from the apparatus main body, making the remaining paper removal work extremely time-consuming.

As shown in FIG. 2, the paper reversing unit 18 of the image forming apparatus 1 according to the present embodiment pulls the paper P in a substantially vertical direction (Z direction) to the side of a paper feeder 20 having paper trays 21 and 22. It has a paper transport path 16c, and is provided with a paper pull-in storage section 181 that draws and stores paper P substantially horizontally (in the X direction) below the paper tray 22.

The paper pull-in storage section 181 has a paper guide plate 182 that faces the lowest paper tray 22 of the paper feeder 20 and guides the drawn paper P in the horizontal direction (X direction). As shown in FIG. 3, the paper guide plate 182 has a recess 182a extending in the direction in which the paper tray 22 is pulled out (Y direction) and intersecting the direction in which the paper P is conveyed.
As shown in FIG. 3, a tapered portion 182ab is formed in the recess 182a to prevent the drawn paper P from jamming in the recess 182a.

As shown in FIG. 4, on the lower surface 22a of the paper tray 22 facing the paper guide plate 182, there is a paper guide plate 182 on the pull-out start point side in the pull-out direction (-Y direction) and on the back side of the paper P transport area. A protrusion 183 is provided that protrudes toward the recess 182a formed in the recess 182a. The protrusion 183 has a base end 183a fixed to the lower surface 22a of the paper tray 22, and a tip 183b substantially in contact with the bottom surface 182ac of the recess 182a of the paper guide plate 182. The material for such a protrusion 183 is preferably a foamed elastic body. In addition, the foamed elastic body should be foamed polyurethane or foamed silicone that is resistant to tension, especially from the viewpoint of not damaging the bottom surface 182ac of the depression 182a due to friction and preventing tearing or damage over a long period of time. is desirable.

(2.2) Removal of remaining paper When the paper P comes off the reversing roll 16d of the paper transport path 16c and falls into the paper draw-in storage section 181, as shown in FIG. If left as is, the remaining paper P1 remains in a state that cannot be removed.

When the remaining paper P1 remains on the paper guide plate 182 in this way, as shown in FIG. 5(b), when the paper tray 22 is pulled out toward the operator (-Y direction), In conjunction with the pulling-out operation, the protrusion 183 moves within the recess 182a of the paper guide plate 182 while contacting the end of the remaining paper P1. As a result, the remaining paper P1 is pushed out in the pull-out direction (-Y direction) of the apparatus main body as the protruding body 183 moves, and the remaining paper P1 can be removed without removing the paper tray 22.

“Second embodiment”
FIG. 6(a) is a schematic front cross-sectional view showing a paper reversing section 18A and paper trays 21 and 22 according to the second embodiment, and FIGS. 6(b) and 6(c) are side views showing a paper reversing section 18A and paper trays 21 and 22. A schematic cross-sectional view, FIG. 7 is a perspective view showing the paper guide plate 182 and the paper tray 22 from the rear side of the apparatus, and FIG. FIG. 2 is a schematic side cross-sectional view for explanation.
Hereinafter, the configuration of the paper reversing section 18A and cleaning of the paper guide plate 182 will be described with reference to the drawings.

As shown in FIG. 6(a), the paper reversing unit 18A of the image forming apparatus 1 according to the present embodiment rotates the paper in a substantially vertical direction (Z direction) to the side of a paper feeder 20 having paper trays 21 and 22. It has a paper conveyance path 16c for drawing in the paper P, and is provided with a paper draw-in accommodating section 181 that draws and stores the paper P substantially horizontally (in the X direction) below the paper tray 22.

The paper pull-in storage section 181 has a paper guide plate 182 that faces the lowest paper tray 22 of the paper feeder 20 and guides the drawn paper P in the horizontal direction (X direction). Similar to the first embodiment, the paper guide plate 182 has a recess 182a formed in the direction extending in the direction in which the paper tray 22 is pulled out (Y direction) and intersecting the direction in which the paper P is conveyed.

As shown in FIG. 7, there is a paper guide plate 182 on the lower side 22a of the paper tray 22 opposite to the paper guide plate 182 on the pull-out start point side in the pull-out direction (-Y direction) and on the back side of the paper P transport area. A protrusion 183 is provided that protrudes toward the recess 182a formed in the recess 182a.
Further, on the pull-out start point side in the pull-out direction (-Y direction) of the lower surface 22a facing the paper guide plate 182 of the paper tray 22, a portion protrudes toward the paper guide plate 182 beyond the transport area of the paper P. A second protrusion 184 is provided.

Like the protrusion 183, the second protrusion 184 has a base end 184a fixed to the lower surface 22a of the paper tray 22, and a tip 184b in contact with the surface 182b of the paper guide plate 182. The material of the protruding body 183 and the second protruding body 184 is preferably a foamed elastic body. In particular, the second protruding body 184 moves relatively while contacting the surface 182b of the paper guide plate 182, and the second protruding body 184 moves relatively to the surface 182b of the paper guide plate 182. Since the sheet guide plate 182 is cleaned, it is preferable to use polyurethane foam or silicone foam from the viewpoint of not damaging the paper guide plate 182 and preventing it from being torn or damaged over a long period of time.

As shown in FIG. 8A, dust S such as paper powder and dirt accumulates on the surface 182b of the paper guide plate 182. As shown in FIG. According to this embodiment, as shown in FIG. 8B, when the paper tray 22 is pulled out toward the operator side (-Y direction), the surface of the paper guide plate 182 is The second protrusion 184 moves on the surface 182b of the paper guide plate 182 while being in contact with the surface 182b. As a result, the dust S accumulated on the paper guide plate 182 is swept out in the pull-out direction (-Y direction) of the apparatus main body as the second protrusion 184 moves.
As a result, it is possible to clean the paper guide plate 182 of the paper reversing section 18A by pulling out the paper tray 22, and to prevent dirt from adhering to the user who removes the remaining paper P1.

Furthermore, if the remaining paper P1 remains on the paper guide plate 182, as shown in FIG. 8(c), by pulling out the paper tray 22 toward the operator (-Y direction), 22, the protruding body 183 moves within the recess 182a of the paper guide plate 182 while contacting the end of the remaining paper P1, and the remaining paper P1 is moved in the drawing direction (-Y direction) of the main body of the apparatus. ), and the remaining paper P1 can be removed without removing the paper tray 22.

"Modification 1"
FIG. 9 is a perspective view showing the paper guide plate 182 and paper tray 22 of the paper reversing unit 18B according to modification 1, looking toward the rear side of the apparatus, and FIG. 10 shows the removal of the remaining paper P1 and the paper in the paper reversing unit 18B. FIG. 7 is a schematic side cross-sectional view illustrating cleaning of the guide plate 182. FIG.

As shown in FIG. 9, the protruding body 183B and the second protruding body 184B of the paper reversing section 18B according to Modification 1 are formed of Mylar film. As the Mylar film, a PET film having a thickness of 0.1 to 0.2 mm is preferable. According to this Mylar film, as shown in FIG. 10, in conjunction with the pull-out operation of the paper tray 22, the protruding body 183B can reliably push out the remaining paper P1 that remains on the paper guide plate 182, and the second The protruding body 184B contacts the surface 182b of the paper guide plate 182 like a wiper and can reliably sweep out the dust S accumulated on the paper guide plate 182 in the direction in which the main body of the apparatus is pulled out (-Y direction).

"Variation 2"
FIG. 11 is a perspective view showing the paper guide plate 182 and paper tray 22 of the paper reversing section 18C according to modification 2, looking toward the rear side of the apparatus, and FIG. 12 shows the removal of the remaining paper P1 and the paper in the paper reversing section 18C. FIG. 7 is a schematic side cross-sectional view illustrating cleaning of the guide plate 182. FIG.

As shown in FIG. 11, a protruding body 183C and a second protruding body 184C of a sheet reversing section 18C according to modification 2 are formed of pile brushes. As for the pile brush, it is preferable that the pile is made of monofilament with a diameter of 0.1 to 0.2 mm. According to such a pile brush, as shown in FIG. 12, the protruding body 183B can reliably push out the remaining paper P1 that remains on the paper guide plate 182 in conjunction with the pull-out operation of the paper tray 22, and the second The protruding body 184B contacts the surface 182b of the paper guide plate 182 with a pile and removes the dust S accumulated on the paper guide plate 182 without damaging the surface of the paper guide plate 182 in the drawing direction (-Y) of the apparatus main body. direction).

1, 100... Image forming apparatus 10... Image forming section 12... Exposure device 13... Photoreceptor unit 14... Developing device 15... Transfer device 16a, 16b, 16c... Paper Conveying section 17...Fixing device 18, 18A, 18B, 18C...Paper reversing section 181...Paper pull-in storage section 182...Paper guide plate 182a...Recess 183, 183B, 183C...Protrusion Body 184, 184B, 184C...Second protruding body 20...Paper feeding device 21, 22...Paper tray 30...Paper discharge section

Claims (6)

A drawer unit that can be pulled out from the main device,
a paper reversing unit formed in the apparatus main body and pulling the paper below the drawer unit in order to reverse the paper;
a paper guide plate provided in the paper reversing section opposite to the drawer unit, extending in the pullout direction of the drawer unit and having a recess formed in a direction intersecting the conveyance direction of the paper;
a protruding body that is provided on the drawer start point side in the drawer direction of the lower surface of the drawer unit facing the paper guide plate and that is provided on the back side of the paper conveyance area and that protrudes toward the recess;
An image forming apparatus characterized by: The protrusion moves along the recess of the guide plate toward the drawer side of the drawer unit in conjunction with the drawer operation of the drawer unit, and contacts the edge of the paper present in the paper reversing section. pushing out the paper in a direction in which the main unit is pulled out;
The image forming apparatus according to claim 1, characterized in that: The drawer unit further includes a second protruding body that is provided on a drawer start point side in the drawer direction on a lower surface facing the guide plate of the drawer unit and is provided on the back side of the paper conveyance area and protrudes toward the paper guide plate,
cleaning the paper guide plate while the second protrusion moves toward the drawer side of the drawer unit while contacting the paper guide plate in conjunction with the drawer operation of the drawer unit;
The image forming apparatus according to claim 1 or 2, characterized in that: the protruding body and the second protruding body are foamed elastic bodies;
The image forming apparatus according to claim 3, characterized in that: the protruding body and the second protruding body are Mylar films;
The image forming apparatus according to claim 3, characterized in that: the protruding body and the second protruding body are pile brushes;
The image forming apparatus according to claim 3, characterized in that:

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